Manifold/throttle bodys-ED:-)

[DJohn77284 at aol.com]

Yamaha, again, have used this method in the past on some of there air-cooled
motrocycle engines. They called it 'YICS' - Yamaha Induction Control System.

I don't know whether there were any real benefits or that it was just a
gimick.

They also tried seven valve heads - four inlet, three exhaust - before
settling with five valves.

Regards,

Dave
DJohn77284 at aol.com